[Bug 2058179] Re: Kernel 6.8 + zfs-2.2.2: copy_file_range Operation Not Supported

[Danilo Egea Gondolfo]

Oh the new kernel wasn't built with the new zfs-dkms =/

II: dkms-build downloading zfs (zfs-dkms_2.2.2-0ubuntu7_all.deb)
II: fetching https://launchpad.net/ubuntu/+archive/primary/+files/zfs-dkms_2.2.2-0ubuntu7_all.deb
II:   fixing https://launchpadlibrarian.net/718392332/zfs-dkms_2.2.2-0ubuntu7_all.deb
II:   following http://launchpadlibrarian.net/718392332/zfs-dkms_2.2.2-0ubuntu7_all.deb
II: dkms-build-configure dkms-build-configure--zfs found, executing

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Title:
  Kernel 6.8 + zfs-2.2.2: copy_file_range Operation Not Supported

Status in Native ZFS for Linux:
  Fix Released
Status in systemd package in Ubuntu:
  Fix Committed
Status in zfs-linux package in Ubuntu:
  Fix Released
Status in systemd source package in Noble:
  Fix Committed
Status in zfs-linux source package in Noble:
  Fix Released

Bug description:
  As per https://github.com/openzfs/zfs/issues/15930

  ZFS and kernel 6.8 seem to throw EOPNOTSUPP on calling
  copy_file_range, breaking a multitude of applications.

  Upcoming noble (24.04) appears to currently include kernel 6.8 and ZFS
  2.2.2.

  One notable issue is when running Root on ZFS: systemd-sysusers will
  always fail to create users/groups with the error "Failed to backup
  /etc/{group,passwd}: Operation not supported" due to the call to
  copy_file_range.

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